Mold for lining bearings



June i4, 1949. w H, TOBENER, JR, ET AL 2,473,483

MOLD FOR LINING BEARINGS Filed Sept. l2, 1946 3 Sheets-Sheet l IB /7 lqm r nh "W" s4 IH I ff? o as' 52 3y 55 fi'z W 5 OO O 84 70\ l O d /3 5l/0/ I 7/ I9 J Y' lll! f' ll' 34 UL nllp m J UW- ALW! June 14, 1949. w H,TOBENER, JR, ET AL 2,473,483

MOLD FOR LNING BEARINGS Filed sept. 12, 1946 3 sheds-sheet 2 fj 50 47L5. 5 52 4a 44 0 44 4a 52 34 -40 57 40-.`

32 figa a 34;; 34 j; I /4 4 VII/9m [4- [I lla? /54 A L35L 41 5 IN1/E172271-5 34" WML/AM Afef/,fr 7555/1/55 di A E CARL 1./ /vf/son/ Hume 14,1949. w- H, TOBENER, JR, ET AL 2,473,483

MOLD FOR LINING BEARINGS Filed Sept. 12, 1946 3 Sheets-Sheet 3 EQ/Www 5E,

3 die plate pressed into engagement with the uneven side of a wornconnecting rod bearing.

Figure 7 is a side elevation of an alternate form of head for thehorizontally acting clamping means of this invention.

Figure 8 is an exploded isometric view of the self-adjusting die plateassembly.

Figure '9 is a fragmentary sectional view taken on a line IX-IX ofFigure 3.

Figure 10 is a fragmentary sectional view taken on line X-X of Figure 3.

As shown on the drawings:

The machines of this invention comprise a table or supporting frame I0,shown in Figures 1 and 2, having upstanding supporting legs I I and ailat horizontal top I2. An opening I3 extending through the table top isprovided near the center thereof.

For supporting the operating parts of this casting machine, a bedplateI4 is slidably mounted on the table top I2 by means of rods I5 havingsquare cross section central member I5a secured, as by welding, to theunderside of the ledges I4a of the bedplate I4 (Figure 5). The rods I5are disposed for sliding movement in pillow blocks I1 which arepermanently welded to the table top I2 and pillow blocks I8 which aredetachably fastened on the table top I'2 by cap-screws I9. A coil springis disposed around each guide rod I5 with one end abutting the pillowblock I1 and the other end abutting a square central portion I5a of therod I5. By its action against the portion I5a, the spring 20 tends atall times to urge the bedplate I4 and the guide rod I5 to the left.

Depending from the bedplate I4 and secured thereby by cap-screws 22 is asubstantially cylindrical housing 2| which has a central opening 2 Ia. Acollar 23 is fastened by cap-screws 23a to the bottom surface of housing2l. This collar also has a' central opening 23h in line with the opening2Ia of the housing 2|. A support rod 24 is positioned in the openings2Ia, and 23h and is ad-l justably held by a wing nut 25. This wing nutis screwed onto a downwardly threaded member 24a of the support rod 24.A collar 26, disposed about the threaded member 24a, is held against ashoulder '23e of the collar 23 by the wing nut 25. Thus, the support rod24 may be adjusted upwardly or downwardly by the wing nut 25.

'y A coil spring 21 is disposed about a reduced central cylinder portion24h of the support rod 24, abutting at its upper end on a shoulder 24eof the rod 24 and at its lower end on the upper surface of the collar23. This spring 21 tends to resist downward movement of the support rod24.

The upper cylinder portion 24d of the support rod 24 extends through anopening 28 of the bedplate I4 and through an opening 29a in a tiltingcollar 29. The collar '29 is pivotally supported by the bedplate I4 onpivot arms 29h (Figure 5) which are positioned in pivot sockets of thebedplate I4.

`A pair of rectangular shaped tilting plates 3I (Figure 8), one of whichis positioned on either side of the supportrod 24, is positioned forpivotal'movement on two ball bearings 32 which are seated diametricallyon the collar 29. A die plate 33 rests on the top surface of eachtilting plate 3|. Each die plate has a semicircular opening 33a which isadapted to t around a mandrel 36.

,On the upper surface of the die plate 33 a ridge 3312 is providedaround semicircular opening 33a. This ridge has an outer sloping sideinclined at approximately a degree angle to the top sur 4 face of thedie plate 33. The inner side of the ring 33h is vertical and conforms tothe inner wall of the opening 33a- This ridge causes a beveled edge tobe Icast on the bearing, as will be described hereinafter.

During the pouring operation the die plates 33 must be held in positionaround the mandrel 36. For this purpose there is provided, on both sidesof the bed plate I4, a spring-pressed knob assembly 34. As illustratedin Figure 10, the knob assembly 34 comprises a knob 34a which has ashoulder portion 34h. One side of both the knob and the shoulder is cutoff to provide a flattened surface 34e. The shoulder 34h is held againstthe bedplate I4 by the action of a spring 34e disposed in a passage I4bof the bedplate I4, about a bolt 34d, having one end abutting the headof the bolt 34d and the other end abutting a shoulder I4d of thebedplate I4. Since the bolt 34d is screwed into the knob 34a, the actionof the spring tends to hold the knob against the bedplate I4. Theflattened surfaces 34c of the knob 34a and the shoulder 34h permit thedie plates 33 to be inserted in the bedplate I4 under the overhangingledge 35 (Figure 8).

Referring to Figure 10, it will be seen that a knob assembly 34 isdisposed at each end of the passage I4b. These assemblies are identical.However, the spring 34e of the left-hand assembly abuts at one endagainst a bushing I4c, not against a shoulder similar to shoulder I4d.This arrangement is chiefly for convenience and economy in assemblingthe unit, permitting the righthand knob assembly to be positioned firstin the passage I4b and then the left hand assembly, after which thebushing is suitably secured in place as by a press t.

After the die plate 33 has been slid by the flattened sides 34c of theknob 34a and the shoulder 34h into the passageway formed in the bedplateI4 by the overhanging ledge 35 (Figure 8), the knob assembly 34 ispulled out, against the resistance of the spring 34e, far enough so thatit is on the outer side of the die plate and then it is revolvedclockwise and released. The spring will pull the overlapping edge of theshoulder against the die plate 33 and thus will exert a force on the dieplate tending to hold it in position against the mandrel 46, as shown inFigure 4. A knob assembly 34 is provided for both sides of each dieplate, thus assuring a uniform positioning of the die plates.

As best seen in Figure 3, the mandrel 36 consists in plan viewsubstantially of two semicircles connected by a rectangle. The rectangleextends out to either side and provides abutment shoulders or plates 31and 38 against which opposed segments of the work to be lined areforced.

An opening 36a in the lower surface of the mandrel 36 is positioned overthe upper end of the rod 24 and the mandrel is supported thereby.

Laterally projecting portions 36h, 36e, 36d, and 36e, are ridges formedon the outer surface of the mandrel 36, disposed to form oil grooves 40on the inner surface of the cast bearing lining as indicated in Figure 4and Figure 5.

Projecting upwardly from the top surface of the mandrel 36 is acentrally disposed membery -A hole 4I is provided in the abutmentshoulder 31 into which a pin 42 is permanently positioned as by a presst. When the bearing shells are disposed about the mandrel 36 abuttingthe shoulder 31 and 38, the connecting rod holes inthe bearing shellsare positioned over the pin 4? in a horizontal kdirection.thus insuringthe alignment .of the oil grooves to be cast in bearings. shell `is worndown more than vthe corresponding side of the other shell, 'the .shellswill .still be held in correct horizontal alignment. While only one pin42 and one hole 4I 'is shown Lin the drawings, it is within the .scopeoi this invention to provide a similar pin adapted for insertion in theconnecting rod bolt holes in the other side of the 'bearing shells andin a suitable hole in the abutment shoulder .38.

As shown in Figure 9 :a sot '43 is cut through the abutment shoulder 38and =a :lever M is pivotally .connected therein by a pin 45 suitablydisposed in the shoulder `38. As may be readily seen in Figure 3, .after'the bearing has been cast and the clamps, to .be described later, havebeen released, the adherence of the .bearing .li-ning to the mandrel maybe broken by .swinging the lever @d 'from side to Iside .thus ioltin-gthe bearings loose.

.For Ythe purpose :of directing the frnolten metal into the space to belined, a pour plate 46 is removably mounted fon top :of the mandrel 36.This .pour plate #6 has 1a hollow central boss portion 'lll providing an.open-bottomed recess 48 for receiving the upwardly extendingcylindrical member 35j of the mandrel `3.6. This member 36j centers the.pour plate 46 on the mandrel. annular trough 5.0 is provided 'in thetop face of the pour plate 46 around the boss :41 thereof to form amolten 'metal receiving chamber. A plurality of .apertures 5l vareformed at spaced intervals through `the pour plate 46.

A handle '52 Welded Ato the pour plate .46 to facilitate Aits.positioning .and removing.

As shown in Figures 1 .and2 a toggle-clamp device :53 is .mounted on the.table top l2 to act downwardly .on the pour plate 46 `for .clamping thebearing .shells between the pour plate .46 and the die .plate .33against the action Aor" :spring El in the event the mandrel 36 "projects.above the wor-k.

.As illustrated in .Figure 1 the clamp .53 .comprises a supportingplatform dsecurely mounted as by welding to the table top i12. Opposedangle brackets `5.5 are bolted or riveted to the supporting platformandhave `:opstanding spaced opposed iianges 55a :receiving the .end of a.clamping bar A55 therebetween. A pivot pin 26'! extends through theflanges 55a and through .the rear end .of the vbar 56 to pivotallyvconnect the bar to the Liianges. The .forward lend of the clamp 53`comprises a work-engaging .bolt 58 held f.'

in Vplace relative to a collar `59 lby two nuts 160. This arrangementpermits the position .of the bolt 5.8 to be adjusted With respect to thepour plate d6. The collar `59 is rigidly secured in angular relation to`the bar 1.5.6 by bolts Bl. A handle 62 having bifurcated opposedportions 62a straddling the .lianges y55a. is pi'voted to the flanges bymeans of pins 2.63.. 4A pair of links 64 project between the bifurcatedportions y65.211 of the handle .and vare pivoted to the flanges by meansof pins 65. The .other ends of `the links straddle vthe clamping bar '56vand are -pvoted thereto by 'means .of .a pin 66. A stop 4pin @6lextends transversely through 'the clamping bar .5.6 in spaced relation.forwardly from the pivot pin 65.

To .move the work-engag=ing bolt 58 against the boss 45| .of the pourplate A46 the handle A6:2 is pushed ,forward until it strikes the stop`pin 6l, the .pi-nit -Will then .have :slightly passed the even thoughthe side or one .bearing- 6 dead center position which .is reached whenthe pins .63, 66 and '65 are .in line. center position is passed a force.exerted upward on the bolt 58 will' not open the lclamp since therewill be no component tof force tending .to rotate the handle ,62clockwise about its pivot '63. Thus the work is secured in place untilreleased by applying a yclockwise .force to the top .of handle 62.

The clamping l.device l0, as shown in Figures l and i2 .comprises .asupporting plat-form 1l securely mounted as by welding to the vtable topHZ. A bracket :'12 is bolted or riveted to the platform ll.- The.bracket l2 :has a forked support member 12a which carries between itsarms pivot plates 513, one plate being pivotally attached to `each .armby a pin 74. A handle l5 is secured .between .pivot plates 1.3 by meansof rivets lt. The bracket l2 also has two upright bearing supportmembers 1] held in spaced relation to each :other by a tubular .memberJ8. A work-engaging .push rod T9 :is mounted .for slidable movement thebearing members FIJII and .the .spacer tube 18. The push rod 1S isconnected to `.the pivot plates ,1.3 by means of ia link 8). This link48l) is piuotally secured between the pivot plates 13 by a vpin r8.! andis pivotally fastened in a torked end of the push rod it by :a pin a82.

As shown .in .Figure 1 the active end of push rod i9 is yadapted to bepositioned in a tapered oil hole in the .bearing shell of the workpiece. As illustrated in Figure '7, in cases where the bearing shellsfdo not have .suitably placed oil holes, .an tadapter :83 may ibe lslid.over arm 19. This adapter 83 has a curved contact V.surface 83asuitable for cooperation with the exterior surface .of the bearingshell.,

To move the push rod F19 .into .contact with the Work the handle T5 ispushed forward until .it comes to rest on the link r8.0. 1in-thisyposition the pin 8| has .slightly lpassed the .dead .center positionwhich is reached when the pins FM, 8l and 82 are in line. When the deadcenter position l. has been .passed a Torce exerted to the left .on

the push rod '19 lwill not release .the clamp because there will be no.component .of force tending to rotate 'the pivot :plate 13, .fandconsequently the handle .15, lcountercloc'kwise about .the pivot pin 14.Thus Athe work is .secured against lateral movement until the clamp .1Dis released by a counterclockwise force being :applied to .the top ofhandle 15.

A stop pin 841s mounted on a support block '.35 which is secured .as bywelding `to .the table top I2 near one end thereof.

In operation of the machine of this invention a work piece, .such `as aconventional connecting rod .6,6 having a split main bearing portioncomposed of an upper half-.bearing .shell 81 integral with the rodportion of the connecting rod and 1a .strap member or ylower shell `88,is positioned on .die plate .33 around the ridge 33a thereof with the:base of each shell abutting .the shoulders 31 land 38 of the mandrel.3'6 and the bolt holes Aof each piece positioned on the pin 42. vAsbest seen :in Figure 1, .the pushrod `I9 of the clamp l0 is .positionedin a tapered toil hole '.89 of the lower :bearing shell 88 and the wristpin bearing end 90 of .the rod 86 is positioned around the stop pin V84.VBy pushing the handle "l5 of the clamp 'l0 to the right., the Wholebedplate and mandrel assembly is shifted bodily to .the right against.pressure of the springs :2.0 .as the :guide rods l5 '-slidei-nthepillow blocks Il and IB. lElhe `.clamp When .the .dead

aua-isa 'l0 is so adjusted that it will reach its over-deadcenter lockedposition just as the wrist pin end 9D of the connecting rod 86 abutsagainst the stop pin 84. The work is now locked against any forcestending to cause lateral movement.

When the workY has been shifted to the right and locked against the stoppin 84 the pour plate 46 is positioned on member 36f of mandrel 36 andthe Work engaging bolt 58 of the clamp 53 is brought down on the boss 4lof the pour plate 46 and the clamp 53 is put in its over-dead-centerlocked position by pivoting the handle 62 about the pin 63. Thus thework is locked in position between the pour plate 46 and the die plate33.

When the work has been clamped in position, molten metal such as babbittis poured into the trough Ell of the pour plate 46 and flows through theapertures 5i into the annular space between the mandrel wall and theinside surface of the piece to be lined. As soon as the metal hassolidiiled the top clamp 53 is released and the pour plate 46 is given aslight twisting movement and removed. rIhe clamp 'lll is now releasedwhereby the springs 2l) move the bedplate and mandrel assembly bodily tothe left. Pin 42 is then removed from the connecting rod bolt holes.

The lever 44, pivoted in the shoulder 38 of the mandrel 36, may now beswung from side to side against the base of the bearing shells therebyjolting them loose from the mandrel 36. It is necessary that the bearingshells be removed in a lateral direction since the ridges formed on theouter surface of the mandrel 36 for shaping oil grooves in the bearingprevent the mandrel from being withdrawn from the work in a verticaldirection.

When the bearings have been released from the mandrel they may beremoved from the machine.

Illustrated in Figure 6 is an important feature of this invention. Aslong as the upper shell 81 and the lower shell 88 are worn off the sameamount on their sides the mandrel assembly will move directly downwardlywhen the clamp 53 is brought down on the pour plate 46 and the collar29, the tilting plate 3| and the die plate 33 will move downwardly stillmaintaining their initial horizontal positioning. However, if one sideof one shell is worn off more than the cooperating side of the othershell, a pivoting action of the above mentioned members will result.

For example if the surface 81a of the upper bearing shell 8l has beenexcessively worn away as indicated in Figure 6, it will not bear on thedie plate immediately below it when the clamp 53 is brought down on thepour plate 46 due to the fact that the pin 42 (Figure 3) is holding bothshells in horizontal alignment. However, the lower surface 88a of thebearing shell 88 will contact the die plate below it and will transmit adownward force through the associated tilting plate that will cause theleft side of the collar 29 to pivot downwardly about the pivot arms'2911 The right Side of the collar will be pivoted upwardly thus urgingthe tilting plate and the die plate immediately above upwardly until thedie plate contacts the worn surface 81a. The upwardly moving tiltingplate and die plate are free to pivot about the ball bearing 32 and toassume any inclination that may be required to form a tight seal againstthe lower surface.

It is to be noted in Figure 6 that since the knob assembly 34 is springpressed it will move outwardly to permit this tilting action but will atthe same time maintain pressure on the die plate 33.

If the lower surface 81a is worn away at any' 8. angle other than thatindicated in Figure 6 the die plate and the tilting plate will adjustthemselves accordingly. Also, if surface 81a is still horizontal butworn away to a greater extent than the surface 88a, the upwardly movingdie plate and tilting plate will not pivot about ball bearing 32 at all,merely sealing the die plate against the horizontal surface 81a.

If surfaces 81a and 88a are both worn away unevenly, the die plates andtilting plates on both sides will pivot on ball bearings 32 and assume asealing contact on these surfaces.

From the foregoing description it will be clear that this inventionprovides an easily operated and relatively inexpensive machine forsimultaneously lining the sections of a multi-section bearing with alining of uniform thickness containing oil grooves and pockets andchamfered bearing edges. Also this machine is adapted to use thereinvarious sizes of mandrels and mandrels having various surfaces andridges for dening different oil grooving. Further this casting machineis extremely economical to operate due to the novel pivotally mounteddie plate which prevents loss of bearing metal.

It will be of course understood that various details of construction maybe varied through a Wide range without departing from the principles ofthis invention and it is therefore, not the purpose to limit the patentgranted hereon otherwise than necessitated by the scope of the appendedclaims.

We claim as our invention:

l. In a casting machine, members mounted for limited universal pivotingmovement, die plates positioned on said members for movement therewith,a mandrel mounted for slidable movement between said die plates, meansfor clamping work pieces about said mandrel in spaced relationtherefrom, and a pour plate supported on said mandrel for directingmolten metal into spaces between the work pieces and the mandrel.

2. In a casting machine, a support, a member pivoted on said support fortilting movement relative to the support, ball bearings seated on saidmember, support plates pivoted on said ball bearings, die platesslidably positioned on said support plates, a mandrel mounted forslidable movement between said die plates, a pour plate removablypositioned on said mandrel, and means for holding work pieces inposition around said mandrel.

3. In a casting machine, a support member, a collar pivotally mounted onsaid support member, plate members mounted on said collar for limiteduniversal tilting, a spring-pressed support rod extending through saidcollar, a mandrel positioned on said support rod above said collar, dieplates slidably positioned about said mandrel, a pour plate positionedon said mandrel, and means for clamping work pieces in position aboutsaid mandrel, said die plates and said mandrel being selectivelyremovable from said machine.

4. In a casting machine, a support, members tiltably mounted on saidsupport, die plates mounted for tilting with said member, a rod slidablymounted on said support and extending through the member and between thedie plates, a mandrel removably mounted on said rod, a pour plateremovably positioned on said mandrel, and means for clamping work piecesaround said mandrel between said pour plate and said die plates wherebysaid die plates will tilt to follow the contour of the adjacent faces ofthe work pieces.

9 Int-,wasting mecenate-Perle having an apertured top, guid' rodsslidably mounted on said tabletop, a bed plate mounted on said guiderods,

mounted in said .housing, a lcollar disppsed `about said support.. rod,4and .pivQted,. on said..bed .-plate, a pair ofballbearings,diametrically disposed on said collar, a Asupport platepivoted on each ofgloldfelpposedr said-.ball bearings, a die platepositioned .on each suppornplate. in.lsliding...relation Vtheret`o,isa`id die plates eaclt havingm a` oentralsemi-circulanaperture and abeveled ridge around the upper edge ethatQesIidi-f aivesjaedhavinglaiound the` manu sffreely'slfidable andwtiltable 4on .opposite'fsidesofthe'mandrelforf e c"v1ngL,i-,t bdttomend'faces ofthe bearing, ,clampon the table forcing the pou plat"`toward the die plates of saidaperture, a mandrel removably mounted-` against thahaction oftthespri'ngmeans on the rod on said support rod for sliding movement between saiddie plates, a pour plate removably positioned on said mandrel and meansfor holding both halves of a split bfaring around said mandrel andfirmly clamped between said pour plates and said die plate whereby saiddie plates will tilt to hug the adjacent faces of the bearing halves andwill position the beveled ridges within the bearing.

6. In a casting machine, members mounted for limited universal pivotingmovement, die plates positioned on said pivoting members for movementtherewith, a mandrel mounted for slidable movement between said dieplates, means for clamping work pieces about said mandrel, a pour platepositioned on said mandrel and a lever pivoted in said mandrel wherebysaid work pieces may be jarred loose from said mandrel after the castingoperation.

'7. In a casting machine for simultaneously lining the two sections of abolt hole equipped connecting rod bearing without pinning the sectionstogether with bolts in said bolt holes, a mandrel, die plates positionedabout said mandrel, a pour plate mounted on said mandrel, said mandrelhaving ribs for projecting between the sections of the bearing, clampingmeans for locking the sections of the bearing against said ribs, a pincarried by one of said ribs and sized to flt in a bolt hole of eachsection of said bearing for aligning the sections of said bearing in adirection parallel to the face of the connecting rod.

8. A universal bearing lining machine for split bearings comprising anapertured bed plate, a rod slidable through the aperture of said bedplate, a mandrel detachably seated on said rod, said mandrel havingliner dening faces and laterally extending ribs, opposed die platesindependently tiltable and slidable on said bed plate and having innerrecessed ends for receiving said mandrel and for engaging opposed facesof the ribs thereof, said die plates being arranged for respectivelyreceivingr -thereon the bottom end face of a half portion of a splitbearing, a pour plate seated on said mandrel for overlying the top endfaces of the bearing halves, means for holding the bearing halvesagainst the mandrel ribs, and means for urging the die plates and pourplates toward each other to clamp the bearing halves therebetweenwhereby the die plates will automatically tilt to follow the contour ofthe bottom end faces of the bearing halves.

9. A universal liner machine for b-abbitting all sizes of both halves ofconnecting rod bearings which comprises a table, a bed platehorizontally slidable on the table, a connecting rod anchor on thetable, spring means urging the bed plate away from the anchor, avertical rod slidably mounted on said bed plate, spring means urgingsaid rod upwardly to a level above the bed plate,

...to .clalririhe` bearing S therebetween. and causethe dievpl'ates" totilt tofse'aled 'engagement with the bottom end faces'oftlie bearinghalves, and a second clamp on the table acting on a bearing half to urgethe bed plate toward said anchor against the action of the spring meansfor sealingly engaging both halves of the bearing on the mandrel ribswhereby said spring means upon release of said clamps will release thelined bearing halves from the machine.

l0. A universal metal lining machine for split work pieces whichcomprises -a bed plate, a rod slidably mounted on said bed plate, amandrel removably mounted on said rod for quick replacement, a pourplate removably mounted on said mandrel, opposed die plates on oppositesides of said mandrel freely tiltable on said bed plate and arranged forquick replacement, a rst clamp for holding the split sections of anarticle to be lined around the mandrel and a second clamp for clampingsaid sections between the pour plate and die plates whereby said mandreland said die plates are quickly replaceable on said machine toaccommodate different sized articles and l) whereby said die plates willtilt into conformity with the articles.

11. In a machine for lining split articles, an article supportingmechanism comprising a mandrel adapted to receive the articlestherearound and having ribs extending therefrom for projecting betweenthe sections of the articles, means for clamping the sections of thearticles tightly against said ribs, and a spreader rod pivotally mountedon one of said ribs for selective movement against one of the linedarticles for jarring said articles loose from the mandrel.

12. In a casting machine for lining articles with metal or the like,support means for said articles comprising a pair of independent dieplates for receiving thereon the article to be lined, a support for eachplate accommodating universal movement of the plate, and a pivotmounting for said supports whereby said pivot mounting accommodatesvariations in level of the plates while said supports accommodatevariation in angular relationship of the plates at any level to insurefull seating of the article on both plates.

13. In a casting machine, a support, a member pivoted on said supportfor tilting movement relative to the support, ball bearings seated onsaid member, support plates pivoted on said ball bearings, die platesslidably positioned on said support plates, a mandrel mounted forslidable movement between said die plates, a pair of spring pressedknobs for urging each of said die plates against said mandrel, a pourplate removably positioned on said mandrel, and means for holding workpieces in position around said mandrel.

14. In a casting machine, a support member,

1 1 a universal pivoting member disposed in said support member, dieplates positioned on said pivoting member for movement therewith, a,mandrel mounted for slidable movement between saiddie plates, meansincluding a yeldably mounted clamp member on said support member forurging said die plates against said mandrel, means for clamping workpieces about said mandrel and a pour plate positioned on said mandrelfor div recting molten metal into spaces between the work pieces and themandrel.

WILLIAM HENRY TOBENER, JR.

CARL V. ANDERSON.

REFERENCES CITED The following references are of record in the f11e ofthis patent:

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